Jolly Scrooge... which must only apply after the Christmas Eve apparitions. It's also the most inappropriate name ever for good old Wiggy who is the kindest but least jolly horse ever. He's just quietly good! More Bob Cratchett than Scrooge.
Naughty Stocking - not sure about this one, guess he can be naughty and has 4 white socks
Sparkling Grinch- suits my mare- who is easily over excited but only on her own terms